1 cadangan
1.1 deposito di benua timur
1.1.1 Asia
India
China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
1.1.2 Afrika
South Africa, Tanzania
South Africa, Western Africa
1.1.3 Eropah
Germany, Greece, Italy, Scotland, Turkey
United Kingdom
1.1.4 lain
antarctica, tanah penggembalaan
belum menemukan
1.2 deposito di benua Barat
1.2.1 Amerika Utara
1.2.2 Amerika Selatan
Argentina, Brazil, Kolumbia, venezuela
Brazil, Kolumbia, Paraguai
1.3 deposito di oceania benua
1.3.1 Australia
Central Australia, New Zealand, Queensland, Western Australia
Central Australia, Western Australia